Coloring-matter lake and producing same.



CARL IMMERHEISER, OF LUDWIGSHAFEN-ON-THE-RHINE, GERMANY, ASSIGNOR T0 BADISCHE ANILIN & SODA FABRIK, OF

A CORPORATION.

COLORING-MAT No Drawing.

gard salts of the said phosphomolybdic acids as equivalent to the acids themselves.

The following example will serve to illustrate further the nature of this invention,

water, a solution of 2% parts of calcined soda which, however, is not confined to this example. The parts are by weight.

Ewample.

Mix together 10 parts of heavy spar, a solution of 5 parts of aluminium sulfate (containing 18% A1 0 in '50 parts of in 25 parts of water and a solution of 6 parts of barium chlorid in 60 parts of water. Then add a solution .of one part of Specification ofLetters Patent.

LUDWIGSHAFEN-ON-THE-BHINii, GERMANY,

TEE LAKE Ann rnonucme SAME.

Patented July 310, 1917.

Application filed August 3, 1914. Serial No. 854,781.

diamond green G (salt of tetramethyl-diamino-triphenyl-carbinol) in 200 parts of water and a solution of from 2 to 3.,parts of sodium phosphomolybdate infrom- 20 to 30 parts, of water. Then filter off the coloring matter lake and work it up in the usual manner.

Now what I claim is 1. A coloring matter lake containing the combination of the color-base of a basic coal tar coloring matter and a phosphomolybdic acid.

2. A coloring matter lake containing the combination of tetramethyl-diamino-triphenyl-carbinol and a phos homolybdic acid.

3. The process of pro ucing coloring matter lakes by precipitating a basic coal tar I coloring matter by means of a phosphoniolybdic acid. A

4. The process of producing coloring matter lakes by precipitating a salt of tetramethyl-diamino-triphenyl-carbinol with sodium phosphomolybdate.

In testimony whereof I have hereuntoset my hand in the presence of two subscribing witnesses. e

CARL IMMERHEISER. Witnesses:

T ALEC LLOYD, ANDREW HEEV. 

